Thyroid and Adrenal Glands
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The thyroid and adrenal glands are two essential endocrine organs that regulate a wide range of physiological processes crucial for survival, growth, metabolism, and adaptation to stress.
While the thyroid gland primarily controls the rate of energy metabolism and protein synthesis, the adrenal glands coordinate the body’s stress response, electrolyte balance, and metabolic adjustments through hormonal secretion.
Together, they exemplify how the endocrine system maintains homeostasis through finely tuned hormonal interactions and feedback control mechanisms
1. The Thyroid Gland
1.5. Mechanism of Thyroid Hormone Action
- Thyroxine (T4) travels to target cells on thyroxine-binding globulin (TBG).
- Inside the target cell, it is converted to T3.
- Receptor proteins are located inside the nucleus bound to DNA.
